Combination sash-lock and ventilator-guard.



P. G. HAMILTON.

COMBINATION SASH LOOK AND VENTILATOR GUARD.

APPLIGATION FILED MAR. 20, 1913.

1 ,O8'7,444, Patented Feb. 17, .1914.

F c: E A /'Q I l A 1 I p 3 h \& OI/h 3E :/'5 g FRANK C. HAMILTON, 0F NEIV YORK, N. Y.

COMBINATION SASI-I-LOCK AND VENTILATOR-GUARD.

Specification of Letters Patent.

Patented Feb. 17 1914.

Application filed. March 20, 1913. Serial No. 755,721.

To all whom it may concern:

Be it known that I, FRANK O. HAMILTON, a citizen of the United States, residlng at New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Oomi binat-ion Sash-Locks and Ventilator-Guards, of which the following is a specification.

This invention relates to a new and useful improvement in window construction, more especially to a ventilating guard designed to allow a window sash to be partially opened for ventilation and yet prevented from fully opening.

The invention relates more particularly to a window provided with a vertically swinging sash and the guard is designed to hold such a sash at an angle so as to vary the size of the opening at the top of the bottom sash and at the sanze time prevent any unintentional dropping of the sash.

The invention consists in the construction hereinafter set forth.

In the annexed drawings: Figure 1 is a vertical section through a window frame and sashes with the invention applied, the lower sash shown as partly open. Fig. 2, an enlarged plan view of the invention in place, parts of the sash shown as partly open. Fig. 3, a section on line 33 Fig. 2. Fig. 4, a bottom view of the guard bar. Fig. 5 an enlarged perspective view of one end of the casing.

In these drawings: the numeral 1 designates a windowv frame with the upper and lower sashes 2 and 3, the latter adapted to be swung vertically as indicated in Fig. 1. To the bottom rail 4 of the sash 2 at its middle is secured on top the casing 5. This casing consists of a body 6 and a top plate 7. The body 6 is box like having the bottom plate 8, back 9 and ends 10. The ends 10 have projections at the corners 11 where they join the back 9 but their extensions 12 are lower forming shoulders 13. When the top plate 7 is on the body 6, the projections enter notches in the top plate and there are spaces between the top plate 7 and the extensions 12 of the ends 10, such spaces having open ends away from the back 9. In the corners 11 of the body 6 and against the back 9 are placed supports 14 being about half the height of the back 9. Integral with and rising from the center of the bot-tom 8 of the body 6 is a circular post 15 having in its top a threaded hole 16. The top plate 7 is secured in place in the body 6 by a screw 17 which engages the threaded hole 16 in the post 15. On the post 15 is to be swiveled the guard bar 18. As shown in the drawng, there may also be swiveled upon this post 15 a lock bar and the device will be explained in connection with both the guard and lock bars. The guard bar 18 has a stem 19 which is held by the vertical swivel 20 to the head 21. The head 21 is provided with shoulders 22, which are import-ant features of the device. Between the shoulders 22 at the ends of the head there is made an inward curve 23 so the shoulders 22 shall be distinct from each other and form decided projections of the head. The sides 24 of the head are also curved inwardly which assists in making the shoulders 22 projections from the head 21.

Lengthwise of the body 6 of the casing 5 is located a flat spring 25 having ends 26 resting on the supports 14 in the corners 11 of the casing and a bowed middle 27 Against this bowed middle 27 the shoulders 22 of the head 21 bear. The stem 19 of the guard bar 18 has the Vertically fiat inner portion 28 and the round outer portion 29. On the under side this stem 19 has several transverse notches 30 in its round portion 29 and is provided with the enlarged outer end 31.

Secured to the top of the lower sash 3 is the guard catch. This is a plate having on top the jaws 32 with the top space 33 between them and rising inside from the bottom the catch projection 34. This space 33 has a width about the same as the thickness of the flat portion 28 of the stem 19 and less than the diameter of the round portion 29 of the stem 19.

On the post 15 of the casing 5 is also swiveled the head 35 of the lock bar 36. This head 35 is similar in shape to the head 21. The head 35 bears against a spring 37 similar in shape to the spring 25 and located below the latter. The ends 38 of the spring 37 bear against the blocks 14 in the corners 11 of the casing 5, thus preventing the two springs 25 and 37 from interfering with each other. To the head 35 is swiveled the lock stem 39 of the lock bar 36. This has a threaded outer end 40 on which is a nut 41. This lock stem 39 has a Width about the same as that of the space 33 of the guard catch. When the sash is closed the device is in the position shown in full and dotted lines to the right of Fig. 2.

The guard stem 19 extends out over one extension 12 of an end 1O 01": the casing 5, and the lock stem 39 extends out over the other extension 12 of the other end 10 of the casing 5. In this position the shoulders of the two heads adjacent to the two springs 25 and 37 bear against these springs and prevent displacement accidentally of the ventilating and lock guards. If it be desired to lock the sashes to prevent them from being opened, the lock guard is turned outwardly and swung so that the lock stem 39 will pass through the space 33 into the guard catch. By means of the adjustable nut 41 the sashes may be held tightly together at the meeting rails.

To use the ventilating guard the lock guard is placed in the position shown in Fig. 2 and the ventilating guard stem 19 is placed as shown in full lines in the several figures. To do this the flat inner portion 28 of the stem 19 is slipped through the space 33 and the upper end of the lower sash is swung outwardly.

Having described the invention, what I claim is:

1. In a device for maintaining a window in a slightly opened position, the combination of a sash lock and ventilator guard, consisting of a casing having lengthwise thereof two springs, two heads pivoted to the casin and each having two shoulders, the shoulders of one head being in line with one spring and the shoulders of the other head being in line with the other spring and a stem swiveled to each head, one stem having a nut threaded thereon and the other stem having means for adjustable connection to a sash.

2. A ventilating guard for window sashes consisting of a casing, a guard bar composed of a head secured to the casing and a stem swiveled to the head and composed of a fiat inner portion and a round outer portion, and a catch plate'having jaws, the space between the jaws being about the same as the width of the flat portion and less than the diameter of the round portion of the stem.

3. In a device for maintaining a window in a slightly opened position, the combination of a casing having at each end a shoulder, two springs, arranged lengthwise of the casing, the ends of one bearing on the shoulders and the ends of the other bearing against the shoulders, one spring being located below the other, two heads pivoted to the casing one above the other and each having two shoulders, the shoulders of one head being in line with one spring and the shoulders of the other head being in line with the other spring, and a stem swiveled to each head, one stem having a nut threaded thereon and the other stem having means for adjustable connection to a sash.

In testimony whereof I aflix my signature in presence of two witnesses.

FRANK O. HAMILTON.

Witnesses:

MATTHEW J. SMITH, GEO. W. RICHARDS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C." 

